Nepean Bay Weather Forecast

    • 21
    • 42

    Wind easing. Partly cloudy

    • 15
    • 26

    Mostly sunny

    • 15
    • 40

    Sunny

    • 23
    • 35

    Sunny

    • 17
    • 25

    Becoming windy. Partly cloudy

    • 16
    • 25

    Partly cloudy

    • 16
    • 29

    Partly cloudy

Today 24 Jan Kangaroo Island

Partly cloudy. Winds northerly 35 to 50 km/h shifting southerly 25 to 40 km/h in the early afternoon. Daytime maximum temperatures around 40.

Extreme Fire Danger Rating

Take action now to protect life and property

Investigator Strait Coastal Waters

Wind
Northerly 15 to 25 knots, reaching up to 30 knots in the late morning and afternoon. Winds shifting southerly in the early afternoon.
Seas
1 to 1.5 metres, increasing to 1 to 2 metres by early evening.
1st Swell
West to southwesterly below 1 metre.
Weather
Partly cloudy.
Weather Situation
A trough is forecast to move over southern SA today, and linger through inland parts of SA into Sunday. Another high pressure system is expected to move over waters to the south over the weekend, extending a ridge over southern SA on Sunday, before a second trough moves into the west on Monday and across the south on Tuesday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Nepean Bay Temperature Statistics View More

January Temperature

Kingscote Airport (7km)

  • Lowest 23 January, 2026

    7.3 °C

  • Average January

    19.1 °C

  • Highest 7 January, 2026

    41.5 °C

Climate (2021–Present)

Kingscote Airport (7km)

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  • Average Low 2021–2026

    9.2 °C

  • Average 2021–2026

    14.7 °C

  • Average High 2021–2026

    21.1 °C
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